Sorry about this. I work on the documentation (author of the post). Are you talking about searching through the docs or searching through GitHub? ARe there specific things you've searched for you couldn't find?
I'd also like to mention that I regret my uncharitable phrasing in my original comment "…the most ungooglable and generic name they could have chosen…". While I do think more specific names might have helped in some ways, I can appreciate the difficulty in coming up with names for this kind of thing.
I used the CSS toolkit called Less and that name took the worst out of each hand. That was just terrible re: searching for things.